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2018 MM > WiFi/Xfi (DS 10/24/18)(IS 10/2018) > Flashcards

WiFi/Xfi (DS 10/24/18)(IS 10/2018) Flashcards

1
Q

A network where devices are connected to each other and shared resources using radio signals that conform to a common standard.

A

Wireless Networks

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2
Q

The most common wireless standard in use

A

WiFi (802.11)

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3
Q

Who governs the WiFi standards

A

(IEEE) the Institute of Electrical and Electronics Engineers

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4
Q

Links two or more devices within a single building or location using a wireless distribution method, providing a connection through an access point to the Internet.

A

Wireless Local Area Networks (LAN)

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5
Q

Connects different LANs together. They interconnect buildings and cities together. The cover large areas such as towns and cities.

A

Wireless Wide Area Networks (WAN)

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6
Q

These replace wires and cables of wired networks

A

Radio transmitters and receivers

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7
Q

The commonly used different WiFi modes.

A
  1. 11a
  2. 11b
  3. 11g
  4. 11n
  5. 11ac
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8
Q

WiFi frequencies or bands

A

2.4 GHz, 5 GHz

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9
Q

What is the theoretical maximum throughput for 802.11a and on what frequency

A

54 Mbps on 5GHz

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10
Q

What is the theoretical maximum throughput for 802.11b and on what frequency

A

11 Mbps on 2.4 GHz

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11
Q

What is the theoretical maximum throughput for 802.11g and on what frequency

A

54 Mbps on 2.4 GHz

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12
Q

What is the theoretical maximum throughput for 802.11n and on what frequency

A

300 Mbps on 2.4 or 600 Mbps on 5 GHz

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13
Q

What is the theoretical maximum throughput for 802.11ac and on what frequency

A

450 Mbps on 2.4 GHz

1300 Mbps on 5 GHz

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14
Q

Radio transmissions over this WiFi mode allows communication at speeds over one gigabit per second

A

802.11ac

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15
Q

What Technologies are used in WOH

A

MoCa, Ethernet, WiFi, Homeplug

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16
Q

The two types of Dual Band Networks

A

Simultaneous/Concurrent, Selectable/Non-Concurrent

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17
Q

What WiFi Physical Barriers Interference level is Medium

A

Water Bricks Marble

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18
Q

What WiFi Physical Barriers Interference level is High

A

Concrete Metal

19
Q

This default Encryption setting provides compatibility with most clients choosing the highest security mode for each client based on its capabilities

A

WPA/WPA2-PSK (TKIP/AES)

20
Q

Wireless Camera, Alarm Systems, Digital Baby Monitors, Wireless audio or audio/video devices, Radar, Perimeter Sensors

A

Typical RF interference sources for 5 GHz band

21
Q

HomePlug Certified adapters are capable of what bandwidth

A

200Mbps, 500Mbps and now over 1Gbps.

22
Q

The app allows a customer to draw a rough floor plan of their home and ping from the app in different areas of the home to generate a heat map of the home.

A

Telstra WiFi-Maximiser

23
Q

Enables the technician to perform a quick speedtest as well as exploring WiFi sweet spots throughout the home

A

CloudCheck

24
Q

What is the ideal placement position for a wireless gateway

A

Central Location Elevated position An open area (avoid closets, filing cabinets, basements, and other tight spaces which weaken the WiFi signals)

25
Q

Simultaneous/Concurrent

A

2.4 GHz and 5 GHz networks used at same time

26
Q

Selective/Non-Concurrent

A

Choose which frequency band, you can only use 1 at a time

27
Q

Benefit of using 2.4 GHz

A

Better wifi range

28
Q

benefits of using 5 GHz

A

faster speed, less wifi interference

29
Q

When a wireless Gateway determines which band is most optimal for a Customer’s WiFi connection based on signal strength and WFi Congestion thresholds.

A

Band Steering

30
Q

What is an ISP

A

internet service provider

31
Q

Three things needed for wireless internet

A

an ISP, configured wireless delivery capable equipment, wifi capable devices

32
Q

A device that connects routers or computers to the internet through a cable

33
Q

A device that transmits a wireless signal & connects devices to each other & the internet through a wired connection to the modem

A

Wireless Router

34
Q

A device that functions as both a modem and a router

A

Wireless Gateway

35
Q

The area in which a wireless-capable device can pick up the wireless signal & connect to the wireless network.

A

Signal Range

36
Q

A group of devices connected to each other & to the Internet without cables.

A

Wireless Network

37
Q

The online site used to view & change the settings of a router & wireless network.

A

Administration Site (GUI)

38
Q

The login information used to access the administration site.

A

router user name and password

39
Q

The name of a wireless network.

A

Network Name (SSID)

40
Q

The password used to connect to a wireless network.

A

Network Password (key)

41
Q

SSID

A

Service Set Identifier

42
Q

Devices are required to be certified WPA2 since when.

43
Q

This makes it possible for a customer to access WiFi even when they’re away from home.

A

Xfinity WiFi hotspots

2018 MM (59 decks)

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